1. The sale transactions reported on this Form 4 were made pursuant to a trading plan entered into in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934. In its Form 10-Q filed October 20, 2015, the Issuer previously disclosed the potential for executive sales of common stock, including through Rule 10b5-1 trading plans.

2. Represents the weighted average sales price for price increments ranging from $114.72 to $115.71. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price for all transactions reported on this Form 4.

3. Represents the weighted average sales price for price increments ranging from $115.72 to $115.74. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price for all transactions reported on this Form 4.

/s/Wendy C. Skjerven, by power of attorney

11/25/2015

** Signature of Reporting Person

Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person,
see
Instruction
4
(b)(v).